Ronald began to explore below the water's surface.

As the depth of his position continued to decrease, after two hundred meters, the surrounding area was almost unilluminated by sunlight, and fell into a considerable degree of darkness.

After all, this is not a fairy tale world made up of "Labyrinth Picture Book".

Although Ronald can barely see his surroundings at the moment, in the environment that continues to be dark, no matter how good his eyesight is, he will not be able to see his surroundings with both eyes underwater.

"In December 1831, as a naturalist, I had the privilege of embarking on the Royal Warship 'Beagle' to embark on a five-year scientific expedition around the world......"

Ronald immediately recited the incantation of The Origin of Species.

With his ability to modify organisms, Ronald greatly enhanced his perception of the movement and sound of water.

And then it's like a fish that actually lives under such water.

With this way of observing, Ronald developed a concrete understanding of his surroundings before continuing to accelerate his dive.

……

This continued descent, until it approached a depth of five hundred meters.

In order to adapt to the increasing water pressure, Ronald had to make corresponding changes to his body every once in a while.

Until this moment, doubts had already arisen in his heart.

According to the old man in the basement of the library, outsiders who came to Capone's library to borrow secret books had to return there with pink crystals.

But this degree of deep water ......

Holders of the original canon like him find it difficult, how can an ordinary spellcaster do it?

Maybe something is wrong with your own methods?

Asking outsiders to borrow books and provide pink crystals may actually be a tactful way for the library to make a transaction!

According to the old man, some pink crystals may have been prepared in the city for outsiders to use in exchange for money or connections. As long as you want to borrow a book, you can get it by making a corresponding transaction.

And not like Ronald is now.

Jump straight into the sea and dive deep into the depths of water that ordinary people will never be able to reach to collect crystals.

"Huh?"

Ronald pondered these things as he continued to dive downward.

Finally, when the depth was close to six hundred meters.

He noticed that in the depths of the ocean below, there was a blurry halo!

It's only just been discovered, though.

But in Ronald's experience, it wasn't just the movement of one or two glowing deep-sea fish.

It must be something that is glowing in that place with a large area!

That's right!

This is it!

Ronald immediately concluded the situation.

Then his mind moved, and he immediately accelerated his dive and swam towards the glowing position.

This kind of light source that exists beneath the surface of the sea is no better than the sun in the sky, and can directly provide suitable light to the sea water at a depth of nearly 200 meters.

So it was only less than twenty meters away.

Ronald actually came into contact with the seabed where the light source was located.

As the underground caretaker of the library said, there is indeed a crystal jungle that covers a large area. The beautiful blue and green light shines out from these crystals, thus providing this bright place from the sea.

……

These...... It's all fluorite?

Ronald looked around with curiosity.

There are many stones in nature that can emit light, but they are actually minerals with fluorescent reactions. This type of mineral does emit such a blue-green fluorescence when exposed to sunlight.

At the bottom of the sea, which is more than 600 meters long, although it is no longer possible to see the surroundings clearly, the sunlight actually retains a faint light here, thus activating these fluorites sitting on the seabed.

“……”

Poof-

Curious, Ronald landed at the bottom of the sea, his feet on the strangely tactile ground, stirring up a fine burst of mud and sand.

Then shuttle through this labyrinth of fluorite jungle.

As Ronald searched for the pink crystals needed for the library, some doubts arose in his mind.

A normal fluorite mine.

Why was there such a pink crystal that has the ability to retain light?

Thinking about the size of the Capone Library, Ronald couldn't help but have a premonition that there were some secrets hidden near this kind of city.

If there's time to stay here and keep digging.

Maybe you can find something shocking on your own?

Brushed up——

At that moment, a stream of water swept past the location of Ronald's right arm.

Extremely sensitive to touch, he instantly realized that in this direction, something with a slender body swam towards the left, and the body length was about two meters.

Is this some kind of deep-sea fish?

Ronald almost subconsciously turned his head away.

Soon, however, he saw something that surprised him.

A deep-sea fish that looked like a ribbon fish was swimming in front of him on the right, and with the light provided by this fluorite maze, Ronald could clearly see that a layer of glowing fine stone gravel had grown between the scales of the other party's body, which was not as beautiful as human life.

“……”

What kind of evolution can give birth to such beautiful creatures?

Faced with the magical creatures he had never seen before, Ronald was stunned for a while.

Without even thinking about it, he subconsciously held on to a piece of fluorite beside him, and then allowed himself to slowly swim forward, and began to observe the appearance of the beautiful creature behind him from a distance.

Until this is the case, the body floats two or three meters away in the water.

Ronald chased his gaze after the other man, inadvertently glancing in the surrounding fluorite jungle, and then abruptly interrupted his thoughts of observing beautiful creatures.

"Something doesn't seem right here......"

Ronald looked at it and lowered it a little deeper into a depression below.

As he looked closer, he realized something special about what he had just noticed.

It was a small fluorite center below, and there seemed to be a little unusual light shining brightly, and its color was pink!

That's it?

Seeing the goal of his trip, how could Ronald hesitate?

Snatching out the sword of Santa Caterina from his back, he aimed at the fluorite below and slashed it down.

Click-

Of course, the sharpness of the saint's legacy is not something that the likes of fluorite can stop.

Ronald split this large area of fluorite three or two, and then found that there was a pink crystal hidden in it, and in its center, a vivid point of light was exactly the same as the pink crystal when the old man in the library displayed it!

Confirm your gains.

Ronald pulled the crystal out of the fluorite and put it in his pocket.

But Ronald put the sword of Santa Caterina back behind him.

When you are about to leave upwards and return to land.

The sudden movement slammed into his side!

Whoop -

With the fierce flowing water, Ronald quickly turned his head.

Then he saw a giant claw that had been composed entirely of luminous crystals, suddenly protruding from between these crystals, and then pinched at him fiercely!